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add additional tests for vi's 'h' and 'l' motions

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This commit is contained in:
Humza Shahid
2024-11-19 04:21:54 +00:00
parent 09165b48d9
commit afcd3ee70b
2 changed files with 202 additions and 5 deletions
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207
test/test.sml
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@@ -4,21 +4,218 @@ open InputMsg
val emptyVec = Vector.fromList []
fun withIdx (app: AppType.app_type, idx) =
let
val
{ startLine
, buffer
, searchList
, searchString
, mode
, windowWidth
, windowHeight
, cursorIdx = _
} = app
in
{ startLine = startLine
, buffer = buffer
, searchList = searchList
, searchString = searchString
, mode = mode
, windowWidth = windowWidth
, windowHeight = windowHeight
, cursorIdx = idx
}
end
val cursorTests = describe "cursor operations"
[ test "'l' moves cursor leftward by one when cursorIdx < length" (fn _ =>
[ test "'h' does not move cursor when cursorIdx = 0" (fn _ =>
let
(* arrange *)
val buffer = LineGap.fromString "hello world"
val app = AppType.init (buffer, 0, 0)
val {cursorIdx = oldCursorIdx, ...} = app
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"l")
(* assert *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"h")
in
Expect.isTrue (cursorIdx = 1)
(* assert *)
Expect.isTrue (oldCursorIdx = 0 andalso cursorIdx = 0)
end)
, test "'h' moves cursor left by one in contiguous string when cursorIdx > 0"
(fn _ =>
let
(* arrange *)
val buffer = LineGap.fromString "hello world"
val app = AppType.init (buffer, 0, 0)
val app = withIdx (app, 1)
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"h")
in
(* assert *)
Expect.isTrue (cursorIdx = 0)
end)
, test "'h' moves cursor left by one in split string when cursorIdx > 0"
(fn _ =>
let
(* arrange *)
val buffer =
{ idx = 0
, line = 0
, leftStrings = []
, leftLines = []
, rightStrings = ["hello", " world"]
, rightLines = [emptyVec, emptyVec]
}
val app = AppType.init (buffer, 0, 0)
val app = withIdx (app, 5)
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"h")
in
(* assert *)
Expect.isTrue (cursorIdx = 4)
end)
, test
"'h' moves cursor left by two in contiguous string when prev chr is \\n"
(fn _ =>
let
(* arrange *)
val buffer =
{ idx = 0
, line = 0
, leftStrings = []
, leftLines = []
, rightStrings = ["hello\nworld"]
, rightLines = [emptyVec]
}
val app = AppType.init (buffer, 0, 0)
val app = withIdx (app, 6)
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"h")
in
(* assert *)
Expect.isTrue (cursorIdx = 4)
end)
, test "'h' moves cursor left by two in split string when prev chr is \\n"
(fn _ =>
let
(* arrange *)
val buffer =
{ idx = 0
, line = 0
, leftStrings = []
, leftLines = []
, rightStrings = ["hello\n", " world"]
, rightLines = [emptyVec, emptyVec]
}
val app = AppType.init (buffer, 0, 0)
val app = withIdx (app, 6)
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"h")
in
(* assert *)
Expect.isTrue (cursorIdx = 4)
end)
, test
"'l' moves cursor right by one in contiguous string when cursorIdx < length"
(fn _ =>
let
(* arrange *)
val buffer = LineGap.fromString "hello world"
val app = AppType.init (buffer, 0, 0)
val {cursorIdx = oldCursorIdx, ...} = app
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"l")
in
(* assert *)
Expect.isTrue (oldCursorIdx = 0 andalso cursorIdx = 1)
end)
, test "'l' moves cursor right by one in split string when cursorIdx < length"
(fn _ =>
let
(* arrange *)
val buffer =
{ idx = 0
, line = 0
, leftStrings = []
, leftLines = []
, rightStrings = ["hello ", "world"]
, rightLines = [emptyVec, emptyVec]
}
val app = AppType.init (buffer, 0, 0)
val {cursorIdx = oldCursorIdx, ...} = app
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"l")
in
(* assert *)
Expect.isTrue (oldCursorIdx = 0 andalso cursorIdx = 1)
end)
, test "'l' does not move cursor right by one when cursorIdx = length"
(fn _ =>
let
(* arrange *)
val buffer = LineGap.fromString "hello world\n"
val app = AppType.init (buffer, 0, 0)
val app = withIdx (app, 10)
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"l")
in
(* assert *)
Expect.isTrue (cursorIdx = 10)
end)
, test
"'l' moves right by two in contiguous string when char is followed by \\n"
(fn _ =>
let
(* arrange *)
val buffer = LineGap.fromString "hello\nworld\n"
val app = AppType.init (buffer, 0, 0)
val app = withIdx (app, 4)
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"l")
in
(* assert *)
Expect.isTrue (cursorIdx = 6)
end)
, test "'l' moves right by two in split string when char is followed by \\n"
(fn _ =>
let
(* arrange *)
val buffer =
{ idx = 0
, line = 0
, leftStrings = []
, leftLines = []
, rightStrings = ["hello\n", "world"]
, rightLines = [emptyVec, emptyVec]
}
val app = AppType.init (buffer, 0, 0)
val app = withIdx (app, 4)
(* act *)
val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"l")
in
(* assert *)
Expect.isTrue (cursorIdx = 6)
end)
, test "'w' moves cursor to start of next word in contiguous string" (fn _ =>
let
(* arrange *)